Meet Kaito Takagi, your typical high schooler with a low profile. He spends his days exploring dungeons in Japan, hunting slimes for some extra cash. On the side, he quietly admires his childhood friend, the popular girl in class. One day, a rare golden slime shows up, and after Kaito defeats it, he finds a super valuable item—a card that can summon mythical beings! He decides to use it and summons a stunning warrior maiden. Now, Kaito has a chance to rise above his ordinary explorer life. Get ready for a modern fantasy story filled with battles!

The story centers around Yoshizou Yukawa, a major hot spring fan who finds hidden springs to revitalize the economy of the local area. However, he dies after falling off a cliff and is transported to an alternate world, thanks to an inari deity of harvest at a small shrine nestled in the rocks. Together with the inari's attendant princess Mayudama, he continues searching for storied hot springs, only this time in the alternate world. Along the way, he ends up naked in hot springs with furry-eared girls and elven girls.